President Biden set a goal that 70% of American adults would have at least one dose of a COVID-19 vaccine by the Fourth of July, but Arizona fell short. Arizona lawmakers are banning most of the state’s K-12 schools from requiring students or staff to wear masks. We spend a lot of time on the road as we make our way across the Valley. But a new concept could have a big impact on that. Plus the latest science, Fronteras Desk and Valley news.